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Environmental Pollution

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Contents


Introduction

Environmental Pollution is a major global concern of the day. In India too we are facing lot of environmental problems. Common public in general and young generation in particular should come forward to reduce this burning issue of pollution and to protect our environment. To achieve this goal a mass awareness campaign should be started. In this context the present curriculum gives much importance to the topics such as pollution, its causes, and control measures to be taken, etc. For effective teaching, we should enhance the confident level of teachers in the subject area. Some information in nut shell will help the elementary school teachers for classroom teching.

Purpose

The purpose of this lesson is to draw individuals' attention to Environmental pollution. Different types of pollution, effects of pollution and control measures will be discussed. Some examples in our country also will be viewed.

Objectives

By training this content area Elementary School teachers will be able to:

  • understand the concept of Pollution.
  • understand types/forms of Pollution.
  • understand the concept of Pollutants.
  • understand the causes of Pollution.
  • understand the effects of Pollution.
  • understand the control of Pollution.
  • handle the Science class more confidently/effectively.

Content

  1. Definition
  2. Types of Pollution
  1. Air Pollution
  2. Water Pollution
  3. Soil Pollution
  4. Noise Pollution
3. Effects of Pollution
  1. Effects on Humans
  2. Effects on Animals
  3. Effects on Plants
  4. Effects on Environment
4. Control of Pollution
  1. Control of Air Pollution
  2. Control of Water Pollution
  3. Control of Soil Pollution
  4. Control of Noise Pollution
5. Environmental Pollution in India-'A Birds Eye view'

I.Definition

Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms .Pollution can take the form of chemical substances, or energy, such as noise, heat, or light. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring.
  • What is a Pollutant?
A pollutant is a waste material that pollutes air, water or soil. Three factors determine the severity of a pollutant: its chemical nature, the concentration and the persistence.

II.Types of Pollution

The major forms of pollution are listed below along with the particular pollutants relevant to each of them:

1.Air Pollution

The release of chemicals and particulates into the atmosphere. Common gaseous air pollutants include Carbon monoxide (CO), Sulfur dioxide (SO2), Chloroflurocharbons (CFCs) and Nitrogen oxides (NO) produced by industry and motor vehicles.
Air pollution comes from both natural and manmade sources. Though globally manmade pollutants from combustion, construction, mining, agriculture and warfare are increasingly significant in the air pollution equation.Motor vehicle emissions are one of the leading causes of air pollution
Principal stationary pollution sources include chemical plants, coal-fired power plants, oil refineries, petrochemical plants, nuclear waste disposal activity, incinerators, large livestock farms (dairy cows, pigs, poultry,etc.), PVC factories, metals production factories, plastics factories, and other heavy industry. Agricultural air pollution comes from contemporary practices which include clear felling and burning of natural vegetation as well as spraying of pesticies and herbicides.

2.Water Pollution

By the release of waste products and contaminants into surface runoff into river drainage systems, leaching into groundwater, liquid spills, waste water discharges, eutrophication and littering.

3.Soil Contamination/Pollution

This occurs when chemicals are released by spill or underground leakage. Among the most significant soil contaminants are hydrocarbons, heavy metals, herbicides, pesticides and chlorinated hydrocarbons.

4.Noise Pollution

which encompasses roadway noise, aircraft noise, industrial noise,etc.

III.Pollution Effects-On Humans, Animals, Plants and The Environment

Pollution effects are indeed many and wide-ranging. There is no doubt that excessive

levels of pollution are causing a lot of damage to human & animal health, plants & trees including tropical rain forests, as well as the wider environment.

IV.Control of Environmental Pollution

V.Environmental Pollution in India-'A Birds Eye view'

Environmental Problems in India

Ganges ('Holy Ganga') Pollution

Mumbai (Bombay) life

Pollution in Bangalore

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Raghukongot

Dr.K.Raghurama Bhat

Lecturer in Science,

DIET-Kasaragod,

Maipady (Post)

Kerala-671124.

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